Hikoki Die / Hand Grinder LDU4 – 32 mm (1-1/4″), 240 W Precision Grinder

The Hikoki LDU4 is a compact, corded die/hand grinder designed to handle precision grinding, sanding, deburring, and finishing tasks in metalworking, fabrication, and general workshop use. Its lightweight form and high-speed operation make it suitable for detailed work where control and accuracy are essential.

Key Features

Compact Yet Powerful

• Driven by a 240 W motor that delivers reliable performance for small-format grinding and finishing tasks.

High No-Load Speed

• Features a rapid 23,000 rpm no-load speed, helping you accomplish detailed material removal quickly and cleanly.

32 mm Wheel Capacity

• Designed to use 32 mm (1-1/4″) grinding wheels, making it ideal for precision shaping, smoothing, and edge work on small parts.

6 mm Collet Chuck

• Equipped with a 6 mm collet to securely hold a range of small accessories such as mounted wheels, burrs, and polishing bits.

Universal Mounting

• Can be adapted with a universal mount for use in lathe or fixture setups, offering flexibility for repetitive or stationary grinding operations.

Included Accessories

• Supplied with mounted grinding wheels, wrenches, and a storage case — giving you essential tools to start working straight away.

Technical Specifications

Specifications reflect manufacturer-published figures and may vary slightly by region.

Performance & Practical Use

The Hikoki LDU4 is engineered for scenarios where precision and maneuverability matter. Its powerful 240 W motor combined with a high rotational speed helps deliver smooth results when grinding small parts, deburring metal edges, or polishing components. The compact design and ergonomic layout make it easy to position and maneuver in tight spaces — useful for detailed workshop and fabrication tasks.

This model is well-suited for professional machinists, metalworkers, and hobbyists alike who require a lightweight grinder capable of delivering fine control and high-speed performance in confined or delicate work areas.

Best Suited For:

✔ Precision grinding and finishing of small parts
✔ Deburring and edge cleanup
✔ Polishing and surface preparation
✔ Detailed workshop and fabrication tasks

User Tips

Safety First: Always wear eye protection and hearing protection when operating grinding tools — high-speed wheels can eject sparks and debris.

Match Accessories to Task: Use grinding, polishing, or cutting bits sized for the 32 mm (1-1/4″) wheel capacity for best performance.

Firm Grip & Light Touch: Apply light, consistent pressure when grinding to avoid overworking the material or slowing the motor.

Proper Storage: Keep the included case to organize wheels, wrenches, and other accessories and protect them from damage.